<template>
  <div>
    <el-breadcrumb separator=">">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>角色管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>
      <el-table :data="roleList" border stripe>
        <el-table-column type="expand">
          <template slot-scope="slots">
            <el-row
              v-for="(item1, i1) in slots.row.children"
              :key="item1.id"
              :class="['bdbottom', i1 === 0 ? 'topbottom' : '', 'vcenter']"
            >
              <el-col :span="5"
                ><el-tag closable @close="removeRightById(slots.row, item1.id)">
                  {{ item1.authName }} </el-tag
                ><i class="el-icon-caret-right"></i
              ></el-col>
              <el-col :span="19">
                <el-row
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                  :class="['bdbottom', i2 === 0 ? 'topbottom' : '', 'vcenter']"
                >
                  <el-col :span="6"
                    ><el-tag
                      type="success"
                      closable
                      @close="removeRightById(slots.row, item2.id)"
                      >{{ item2.authName }}</el-tag
                    ><i class="el-icon-caret-right"></i
                  ></el-col>
                  <el-col :span="18">
                    <el-tag
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      type="warning"
                      closable
                      @close="removeRightById(slots.row, item3.id)"
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="slots">
            <el-button size="mini" type="primary" icon="el-icon-edit"
              >编辑</el-button
            >
            <el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="delById(slots.row.id)"
              >删除</el-button
            >
            <el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(slots.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <el-tree
        :data="rightList"
        :props="treeSet"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="allotRights">确认</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data () {
    return {
      roleList: [],
      setRightDialogVisible: false,
      rightList: [],
      treeSet: {
        label: 'authName',
        children: 'children'
      },
      defKeys: [],
      willModifyRightRowId: ''
    }
  },
  created () {
    this.getRolesList()
  },
  methods: {
    async getRolesList () {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.roleList = res.data
    },
    async delById (id) {
      console.log(id)
    },
    async removeRightById (row, id) {
      const result = await this.$confirm(
        '此操作将永久删除该权限, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (result !== 'confirm') return this.$message.info('已取消')
      const { data: res } = await this.$http.delete(
        `roles/${row.id}/rights/${id}`
      )
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.$message.success(res.meta.msg)
      row.children = res.data
    },
    async showSetRightDialog (row) {
      this.willModifyRightRowId = row.id
      let leaf
      ;(leaf = rowobj => {
        if (!rowobj.children) return this.defKeys.push(rowobj.id)
        rowobj.children.forEach(item => leaf(item))
      })(row)
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.rightList = res.data
      this.setRightDialogVisible = true
    },
    setRightDialogClosed () {
      this.defKeys = []
    },
    // 提交打勾的权限
    async allotRights () {
      const rids = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ].join(',')
      const { data: res } = await this.$http.post(
        `roles/${this.willModifyRightRowId}/rights`,
        {
          rids
        }
      )
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.$message.success(res.meta.msg)
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>
<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.bdtop {
  border-top: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
